Ios And Macos Performance Tuning

This is the eBook of the printed book and may not include any media, website access codes, or print supplements that may come packaged with the bound book. In iOS and macOSTM Performance Tuning, Marcel Weiher drills down to the code level to help you systematically optimize CPU, memory, I/O, graphics, and program responsiveness in any Objective-C, Cocoa, or CocoaTouch program. This up-to-date guide focuses entirely on performance optimization for macOS and iOS. Drawing on 25 years of experience optimizing Apple device software, Weiher identifies concrete performance problems that can be discovered empirically via measurement. Then, based on a deep understanding of fundamental principles, he presents specific techniques for solving them. Weiher presents insights you won’t find anywhere else, most of them applying to both macOS and iOS development. Throughout, he reveals common pitfalls and misconceptions about Apple device performance, explains the realities, and helps you reflect those realities in code that performs beautifully. Understand optimization principles, measurement, tools, pitfalls, and techniques Recognize when to carefully optimize, and when it isn’t worth your time Balance performance and encapsulation to create efficient object representations, communication, data access, and computation Avoid mistakes that slow down Objective-C programs and hinder later optimization Fix leaks and other problems with memory and resource management Address I/O issues associated with drives, networking, serialization, and SQLite Code graphics and UIs that don’t overwhelm limited iOS device resources Learn what all developers need to know about Swift performance

Now that multicore processors are coming to mobile devices, wouldn't it be great to take advantage of all those cores without having to manage threads? This concise book shows you how to use Apple's Grand Central Dispatch (GCD) to simplify programming on multicore iOS devices and Mac OS X. Managing your application’s resources on more than one core isn't easy, but it's vital. Apps that use only one core in a multicore environment will slow to a crawl. If you know how to program with Cocoa or Cocoa Touch, this guide will get you started with GCD right away, with many examples to help you write high-performing multithreaded apps. Package your code as block objects and invoke them with GCD Understand dispatch queues—the pools of threads managed by GCD Use different methods for executing UI and non-UI tasks Create a group of tasks that GCD can run all at once Instruct GCD to execute tasks only once or after a delay Discover how to construct your own dispatch queues

Today's iPhone and iPad apps developers are often running into the need to refine, improve and optimize their apps performances. As more complex apps can be created, it is even more important for developers to deal with this critical issue. Pro iOS Apps Performance Tuning and Optimization covers many common but difficult problems when tuning and optimizing performance for iPhone and iPad apps and how to resolve these problems efficiently. This book gives you the following: Basic knowledge on common problems in iPhone apps Advanced knowledge over data structure, algorithms, multithreading, and network data in iPhone apps Comparison with problems and solutions for Android and Windows Phone apps After reading this must-have book, you'll be ready to make the most of the processing power of the iPhone with your apps performance optimization know-how.

Get valuable hands-on experience with Swift 3, the latest version of Apple’s programming language. With this practical guide, skilled programmers with little or no knowledge of Apple development will learn how to code with Swift 3 by developing three complete, tightly linked versions of the Notes application for the OS X, iOS, and watchOS platforms. In the process, you’ll learn Swift’s fundamentals, including its syntax and features, along with the basics of the Cocoa, CocoaTouch, and WatchKit frameworks. This book teaches you how to use common design patterns for Swift, how to structure an application for Apple’s platforms, and how to submit working apps to the App Store. Divided into four distinct parts, this book includes: Swift 2 basics: Learn Swift’s basic building blocks and features for object-oriented development OS X app development: Set up the document model, build out features, and sync data with iCloud iOS app development: Use multimedia, contacts, location, notifications, and iCloud files to build a fully featured iOS Notes app Advanced app extensions: Build an Apple Watch app, and learn how to debug, monitor, and test all three of your Swift apps

With this book, the reader will discover Mac's secret world by going under the computer's hood and get the inside-out information on everything a Mac user must know to make the most out of his machine. You will find the detailed instructions on how to single-handedly optimize various Mac operating systems to boost the computer’s performance by freeing up space and fine-tuning installed applications. The book also briefly covers different utilities, both native and third-party, that assist in improving your Mac’s health and make the life of millions of Apple users across the globe much easier.

Learn how to integrate all the interface elements iOS users have come to know and love, such as buttons, switches, pickers, toolbars, and sliders. In this edition of the best selling book, you’ll master a variety of design patterns, from the simplest single view to complex hierarchical drill-downs. Assuming little or no working knowledge of the Swift programming language, and written in a friendly, easy-to-follow style, this book offers a comprehensive course in iPhone and iPad programming. The book starts with the basics, walking through the process of downloading and installing Xcode and the iOS 11 SDK, and then guides you though the creation of your first simple application. The art of table building will be demystified, and you’ll learn how to save your data using the iOS file system. You'll see how to to create, load and work with playgrounds as you develop an understanding of the Swift language. You’ll also learn how to save and retrieve your data using a variety of persistence techniques, including Core Data and SQLite. And there’s much more! Beginning iPhone Development with Swift 4 covers the basic information you need to get up and running quickly with your iOS apps. Once you’re ready, move on to Professional iPhone Development with Swift 4 to learn more of the really unique aspects of the SDK and Swift language. What You Will Learn Discover what data persistence is, and why it’s important Build cool, crisp user interfaces Display data in Table Views Work with all the most commonly used iOS Frameworks Who This Book is For Aspiring iOS app developers new to the Apple Swift programming language and/or the iOS SDK.

Offers tips on routine maintenance, hardware and memory upgrades, performance tuning, Internet connections, multimedia, and related matters.

Create your very own apps for the latest iOS devices. You'll start with the basics, and then work your way through the process of downloading and installing Xcode and the iOS 10 SDK, and then guides you though the creation of your first simple application. Assuming little or no working knowledge of the Swift programming language, and written in a friendly, easy-to-follow style, Beginning iPhone Development with Swift 3 offers a comprehensive course in iPhone and iPad programming. In this third edition of the best-selling book, you’ll learn how to integrate all the interface elements iOS users have come to know and love, such as buttons, switches, pickers, toolbars, and sliders. Every single sample app in the book has been rebuilt from scratch using the latest Xcode and the latest iOS 10-specific project templates, and designed to take advantage of the latest Xcode features. Discover brand-new technologies, as well as significant updates to existing tools. You’ll master a variety of design patterns, from the simplest single view to complex hierarchical drill-downs. The art of table building will be demystified, and you’ll learn how to save your data using the iOS file system. You’ll also learn how to save and retrieve your data using a variety of persistence techniques, including Core Data and SQLite. And there’s much more! What You Will Learn Develop your own bestselling iPhone and iPad apps Utilize Swift playgrounds Display data in Table Views Draw to the screen using Core Graphics Use iOS sensor capabilities to map your world Get your app to work with iCloud and more Who This Book is For Anyone who wants to start developing for iPhone and iPad.

Customizing macOS Big Sur is the 9th book in the best-selling Customizing macOS series. This new edition is better than ever with over 500 fantastic tweaks, hacks, secret commands, and hidden features to completely personalize your macOS user experience. Hundreds of illustrations guide you in personalizing your Mac. Customizing macOS Big Sur will teach you how to completely personalize your Mac, fine-tuning every aspect of macOS to transform how you interact with it. You'll learn how to make your Mac more closely match your personal computing style and become more productive and efficient. Learn how to tinker and tweak macOS, bending it to your every will to squeeze every last drop of performance out of your Mac. You don't need to be an Apple genius to customize macOS. Learn how you can safely and quickly customize and personalize macOS Big Sur. Why customize macOS? Well, because you can! It's that simple.

Ready to build apps for iPhone, iPad, and Mac now that Swift has landed? If you’re an experienced programmer who’s never touched Apple developer tools, this hands-on book shows you how to use the Swift language to make incredible iOS and OS X apps, using Cocoa and Cocoa Touch. Learn how to use Swift in a wide range of real-world situations, with Cocoa features such as Event Kit and Core Animation. You’ll pick up Swift language features and syntax along the way, and understand why using Swift (instead of Objective-C) makes iOS and Mac app development easier, faster, and safer. You’ll also work with several exercises to help you practice as you learn. Learn the OS X and iOS application lifecycle Use storyboards to design adaptive interfaces Explore graphics systems, including the built-in 2D and 3D game frameworks Display video and audio with AVFoundation Store data locally with the file system, or on the network with iCloud Display lists or collections of data with table views and collection views Build apps that let users create, edit, and work with documents Use MapKit, Core Location, and Core Motion to interact with the world